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Casing teeth or trench cutter teeth: identify the right interface

DRILLNOVA · Technical guide · Updated

First identify whether the part works on a casing shoe or a diaphragm-wall trench cutter wheel. These are different assemblies, so matching names or similar shapes cannot confirm fit.

01

For a casing shoe, show the tooth and holder

Include casing diameter, tooth position, seat, holder and pin or other retaining parts. Compare the mounting dimensions against the selected drawing.

WS39 casing-tooth reference. The seating and retention arrangement must match the casing-shoe assembly.
WS39 casing-tooth reference. The seating and retention arrangement must match the casing-shoe assembly. Tap image to enlarge.

02

For a cutter wheel, keep the mounting position

Supply the wheel layout and individual tooth position, with the holder and retaining details. Keep this reference separate from a casing-tooth enquiry.

JM trench cutter-tooth reference. This is a different application and mounting interface from WS39.
JM trench cutter-tooth reference. This is a different application and mounting interface from WS39. Tap image to enlarge.

Keep the two mounting checks separate

Casing-shoe tooth versus trench-cutter tooth
AssemblyFeatures to identifyCommon mistake to avoid
Casing shoe / WS39 exampleTooth seat, fixing holes, pin engagement, holder wear and the position on the shoe.Ordering the tooth while omitting the matching pin or a damaged holder.
Trench cutter wheel / JM exampleTooth reference, mounting-hole pattern, support face, wheel position and required orientation.Matching overall size while overlooking the wheel mounting or handed position.

For either assembly, photograph the mounting with the worn tooth removed and compare the fixed interface with the selected drawing. Tip wear changes the visible outline; it does not establish the original mounting geometry. The JM sample inspection shows how overall dimensions, holes and the cutting-end joint are inspected as separate features.